On 18.04.20 17:26, Mauro Carvalho Chehab wrote:
Em Sat, 18 Apr 2020 17:25:49 +0200
Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> escreveu:
Em Sat, 18 Apr 2020 16:39:25 +0200
Patrik Gfeller <patrik.gfeller@xxxxxxxxx> escreveu:
Hello Mauro et al,
I've recently switched to Linux, and I'm very impressed. Almost
everything thing works out of the box. Only the webcam on my device does
not. I did some digging and if I'm right an atomisp driver would be
required. Is this correct? Below the output of lspci:
00:00.0 Host bridge: Intel Corporation Atom/Celeron/Pentium Processor
x5-E8000/J3xxx/N3xxx Series SoC Transaction Register (rev 36) 00:02.0
VGA compatible controller: Intel Corporation Atom/Celeron/Pentium
Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 36)
00:03.0 Multimedia controller: Intel Corporation Atom/Celeron/Pentium
Processor x5-E8000/J3xxx/N3xxx Series Imaging Unit (rev 36) 00:0a.0
Non-VGA unclassified device: Intel Corporation Device 22d8 (rev 36)
00:0b.0 Signal processing controller: Intel Corporation
Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power
Management Controller (rev 36) 00:14.0 USB controller: Intel Corporation
Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI
Controller (rev 36) 00:1a.0 Encryption controller: Intel Corporation
Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted
Execution Engine (rev 36) 00:1c.0 PCI bridge: Intel Corporation
Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express
Port #1 (rev 36) 00:1f.0 ISA bridge: Intel Corporation
Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU (rev 36)
01:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless
Network Adapter (rev 31)
According to the history it looks like the driver was removed from the
kernel in 2018 and replaced with a dummy driver (to make sure power save
works).
Is there a chance that the atomisp driver will return to the kernel?
There are quite a few older tablets and 2in1 devices that would benefit.
Unfortunately I do not understand the removed code (my coding skills are
very basic) and can thus not help to change what ever is necessary to
make it fit for the kernel :-( (does not sound like a beginner project).
However - I would be glad to help out to help testing an ISP driver.
There are simply too many things there to be fixed, and nobody without
time for it. Also, the last reports we had is that the driver was not
working.
Unfortunately, I don't have myself any atomisp hardware, otherwise I
could try fixing it on my spare time.
In time: not really sure if it would be a worth project, as newer Intel
hardware are coming with a different IP block (IPU3).
I don't know how widespread the IPU that I have is, I assume that some
other tablets & 2in1 devices that are a few years old use it as well.
For me it would be definitely nice to have this driver. However, I can
ask around in some of the forums if there is a wider interest. Might be
a niche tough, but the support for the Atom device I use have been
greatly improved in the recent years. So there is at least some work
going on for that platform (I do not know, but I think it is called
cherry trail?). As there are many older reports of problems with audio,
touchscreen, stability (freezes) ... and none of them are present anymore.
As mentioned, if the development is hindered by missing hardware I would
be glad to help. Anyhow - many thanks for your replies, much appreciated!
Thanks,
Mauro
